I haven't played the game but it looks very interesting and like it could be a lot of fun. That said, and this is probably pre-emptive since I haven't played yet, but out of curiosity is there any plan on allowing crew sizes of more than four?

It's a possibility... can't rule that one out but it'll take a lot of work as far as performance goes. 32 max players right now. And since we're flying at realistic speeds (30-40m PER SECOND), our map sizes are HUGE. It's going to be tough but that would be really really cool.